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nfts.go
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nfts.go
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package models
import (
"context"
"database/sql"
"errors"
"fmt"
"math"
"math/big"
"strings"
"time"
"github.com/diadata-org/diadata/pkg/dia"
"github.com/ethereum/go-ethereum/common"
"github.com/jackc/pgtype"
"github.com/jackc/pgx/v4"
)
var currencyCache = make(map[string]dia.Asset)
// SetNFTClass stores @nftClass in postgres.
func (rdb *RelDB) SetNFTClass(nftClass dia.NFTClass) error {
query := fmt.Sprintf("INSERT INTO %s (address,symbol,name,blockchain,contract_type,category) VALUES ($1,$2,$3,$4,$5,NULLIF($6,''))", nftclassTable)
_, err := rdb.postgresClient.Exec(context.Background(), query, nftClass.Address, nftClass.Symbol, nftClass.Name, nftClass.Blockchain, nftClass.ContractType, nftClass.Category)
if err != nil {
return err
}
return nil
}
func (rdb *RelDB) GetNFTClass(address string, blockchain string) (nftclass dia.NFTClass, err error) {
query := fmt.Sprintf("SELECT symbol,name,contract_type,category FROM %s WHERE address=$1 AND blockchain=$2", nftclassTable)
var category sql.NullString
err = rdb.postgresClient.QueryRow(context.Background(), query, address, blockchain).Scan(&nftclass.Symbol, &nftclass.Name, &nftclass.ContractType, &category)
if err != nil {
return
}
nftclass.Address = address
nftclass.Blockchain = blockchain
if category.Valid {
nftclass.Category = category.String
}
return
}
func (rdb *RelDB) GetNFTClassID(address string, blockchain string) (ID string, err error) {
query := fmt.Sprintf("SELECT nftclass_id FROM %s WHERE address=$1 AND blockchain=$2", nftclassTable)
err = rdb.postgresClient.QueryRow(context.Background(), query, address, blockchain).Scan(&ID)
if err != nil {
return
}
return ID, nil
}
func (rdb *RelDB) GetNFTClassByID(id string) (nftclass dia.NFTClass, err error) {
query := fmt.Sprintf("SELECT address,symbol,name,blockchain,contract_type,category FROM %s WHERE nftclass_id=$1", nftclassTable)
var category interface{}
err = rdb.postgresClient.QueryRow(context.Background(), query, id).Scan(&nftclass.Address, &nftclass.Symbol, &nftclass.Name, &nftclass.Blockchain, &nftclass.ContractType, &category)
if err != nil {
return
}
if category != nil {
nftclass.Category = category.(string)
}
return
}
// GetAllNFTClasses returns all NFT classes on @blockchain.
func (rdb *RelDB) GetAllNFTClasses(blockchain string) (nftClasses []dia.NFTClass, err error) {
var rows pgx.Rows
query := fmt.Sprintf("SELECT address,symbol,name,blockchain,contract_type,category FROM %s WHERE blockchain=$1 ORDER BY name DESC", nftclassTable)
rows, err = rdb.postgresClient.Query(context.Background(), query, blockchain)
if err != nil {
return
}
defer rows.Close()
for rows.Next() {
var nftClass dia.NFTClass
var category pgtype.Unknown
err := rows.Scan(&nftClass.Address, &nftClass.Symbol, &nftClass.Name, &nftClass.Blockchain, &nftClass.ContractType, &category)
if err != nil {
log.Error(err)
}
nftClass.Category = category.String
nftClasses = append(nftClasses, nftClass)
}
return
}
func (rdb *RelDB) GetTradedNFTClasses(starttime time.Time) (nftClasses []dia.NFTClass, err error) {
var rows pgx.Rows
query := fmt.Sprintf(`
SELECT DISTINCT nc.address, nc.blockchain,nc.symbol,nc.name
FROM %s nc
WHERE EXISTS (
SELECT 1
FROM %s ntc
WHERE ntc.nftclass_id=nc.nftclass_id
AND ntc.trade_time>=to_timestamp($1)
)`,
nftclassTable,
NfttradeCurrTable,
)
rows, err = rdb.postgresClient.Query(context.Background(), query, starttime.Unix())
if err != nil {
return
}
defer rows.Close()
for rows.Next() {
var nftClass dia.NFTClass
var category pgtype.Unknown
err := rows.Scan(&nftClass.Address, &nftClass.Blockchain, &nftClass.Symbol, &nftClass.Name)
if err != nil {
log.Error(err)
}
nftClass.Category = category.String
nftClasses = append(nftClasses, nftClass)
}
return
}
// GetNFTClassPage returns @limit NFT classes with @offset.
func (rdb *RelDB) GetNFTClasses(limit, offset uint64) (nftClasses []dia.NFTClass, err error) {
query := fmt.Sprintf("SELECT address,symbol,name,blockchain,contract_type,category FROM %s LIMIT $1 OFFSET $2", nftclassTable)
rows, err := rdb.postgresClient.Query(context.Background(), query, limit, offset)
if err != nil {
return
}
defer rows.Close()
for rows.Next() {
var nftClass dia.NFTClass
var category pgtype.Unknown
err := rows.Scan(&nftClass.Address, &nftClass.Symbol, &nftClass.Name, &nftClass.Blockchain, &nftClass.ContractType, &category)
if err != nil {
log.Error(err)
}
nftClass.Category = category.String
nftClasses = append(nftClasses, nftClass)
}
return
}
func (rdb *RelDB) UpdateNFTClassCategory(nftclassID string, category string) (bool, error) {
query := fmt.Sprintf("UPDATE %s SET category=$1 WHERE nftclass_id=$2", nftclassTable)
resp, err := rdb.postgresClient.Exec(context.Background(), query, category, nftclassID)
if err != nil {
return false, err
}
var success bool
respSlice := strings.Split(string(resp), " ")
numUpdates := respSlice[1]
if numUpdates != "0" {
success = true
}
return success, nil
}
// GetNFTCategories returns all available NFT categories.
func (rdb *RelDB) GetNFTCategories() (categories []string, err error) {
var rows pgx.Rows
query := fmt.Sprintf("SELECT category FROM %s", nftcategoryTable)
rows, err = rdb.postgresClient.Query(context.Background(), query)
if err != nil {
return
}
defer rows.Close()
for rows.Next() {
var category string
err := rows.Scan(&category)
if err != nil {
log.Error(err)
}
categories = append(categories, category)
}
return
}
func (rdb *RelDB) SetNFT(nft dia.NFT) error {
nftClassID, err := rdb.GetNFTClassID(nft.NFTClass.Address, nft.NFTClass.Blockchain)
if err != nil {
return err
}
query := fmt.Sprintf("INSERT INTO %s (nftclass_id,token_id,creation_time,creator_address,uri,attributes) VALUES ($1,$2,$3,$4,$5,$6)", nftTable)
_, err = rdb.postgresClient.Exec(context.Background(), query, nftClassID, nft.TokenID, nft.CreationTime, nft.CreatorAddress, nft.URI, nft.Attributes)
if err != nil {
return err
}
return nil
}
func (rdb *RelDB) GetNFT(address string, blockchain string, tokenID string) (dia.NFT, error) {
nft := dia.NFT{}
if blockchain == dia.ETHEREUM {
address = common.HexToAddress(address).Hex()
}
query := fmt.Sprintf(`
SELECT c.address,c.symbol,c.name,c.blockchain,c.contract_type,c.category,n.token_id,n.creation_time,n.creator_address,n.uri,n.attributes
FROM %s n
INNER JOIN %s c
ON(c.nftclass_id=n.nftclass_id AND c.address=$1 AND c.blockchain=$2)
WHERE n.token_id=$3`,
nftTable,
nftclassTable,
)
var contractType sql.NullString
var classCat sql.NullString
err := rdb.postgresClient.QueryRow(context.Background(), query, address, blockchain, tokenID).Scan(
&nft.NFTClass.Address,
&nft.NFTClass.Symbol,
&nft.NFTClass.Name,
&nft.NFTClass.Blockchain,
&contractType,
&classCat,
&nft.TokenID,
&nft.CreationTime,
&nft.CreatorAddress,
&nft.URI,
&nft.Attributes,
)
if contractType.Valid {
nft.NFTClass.ContractType = contractType.String
}
if classCat.Valid {
nft.NFTClass.Category = classCat.String
}
return nft, err
}
func (rdb *RelDB) GetNFTID(address string, blockchain string, tokenID string) (ID string, err error) {
nftclassID, err := rdb.GetNFTClassID(address, blockchain)
if err != nil {
return
}
query := fmt.Sprintf("SELECT nft_id FROM %s WHERE nftclass_id=$1 AND token_id=$2 ", nftTable)
err = rdb.postgresClient.QueryRow(context.Background(), query, nftclassID, tokenID).Scan(&ID)
if err != nil {
return
}
return
}
// GetLastBlockheightTopshot returns the last block number before timestamp given by @upperBound.
func (rdb *RelDB) GetLastBlockheightTopshot(upperBound time.Time) (uint64, error) {
query := fmt.Sprintf(`
SELECT attributes
FROM %s
WHERE nftclass_id=(select nftclass_id FROM %s WHERE address='0x0b2a3299cc857e29' AND blockchain='Flow')
ORDER BY creation_time
DESC LIMIT 1`,
nftTable,
nftclassTable,
)
attributes := make(map[string]interface{})
err := rdb.postgresClient.QueryRow(context.Background(), query).Scan(&attributes)
if err != nil {
return 0, err
}
currentBlock := uint64(attributes["blocknumber"].(float64))
return currentBlock, nil
}
// SetNFTTTrade is a wrapper for SetNFTTradeToTable that stores @trade into the main nfttrade table.
func (rdb *RelDB) SetNFTTrade(trade dia.NFTTrade) error {
return rdb.SetNFTTradeToTable(trade, NfttradeCurrTable)
}
// SetNFTTradeToTable stores into @table.
func (rdb *RelDB) SetNFTTradeToTable(trade dia.NFTTrade, table string) error {
nftclassID, err := rdb.GetNFTClassID(trade.NFT.NFTClass.Address, trade.NFT.NFTClass.Blockchain)
if err != nil {
return err
}
nftID, err := rdb.GetNFTID(trade.NFT.NFTClass.Address, trade.NFT.NFTClass.Blockchain, trade.NFT.TokenID)
if err != nil {
return err
}
currencyID, err := rdb.GetAssetID(trade.Currency)
if err != nil {
log.Error("get currency ID: ", err)
}
price := trade.Price.String()
tradeVars := "nftclass_id,nft_id,price,price_usd,transfer_from,transfer_to,currency_id,bundle_sale,block_number,trade_time,tx_hash,marketplace"
query := fmt.Sprintf("INSERT INTO %s (%s) VALUES ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12) ON CONFLICT (nft_id,trade_time) DO NOTHING", table, tradeVars)
_, err = rdb.postgresClient.Exec(context.Background(), query, nftclassID, nftID, price, trade.PriceUSD, trade.FromAddress, trade.ToAddress, currencyID, trade.BundleSale, trade.BlockNumber, trade.Timestamp, trade.TxHash, trade.Exchange)
if err != nil {
return err
}
return nil
}
// GetLastBlockNFTTtrade returns the last blocknumber that was scraped for trades in @nftclass.
func (rdb *RelDB) GetLastBlockNFTTrade(nftclass dia.NFTClass) (blocknumber uint64, err error) {
query := fmt.Sprintf(`
SELECT block_number
FROM %s
WHERE nftclass_id=(SELECT nftclass_id FROM %s WHERE address=$1 AND blockchain=$2)
ORDER BY block_number
DESC LIMIT 1`,
NfttradeCurrTable,
nftclassTable,
)
err = rdb.postgresClient.QueryRow(context.Background(), query, nftclass.Address, nftclass.Blockchain).Scan(&blocknumber)
if err != nil {
return
}
return
}
// GetNFTTradesCollection returns all trades done on the nft collection given by @address and @blockchain.
func (rdb *RelDB) GetNFTTradesCollection(address string, blockchain string, starttime time.Time, endtime time.Time) (trades []dia.NFTTrade, err error) {
var rows pgx.Rows
tradeVars := "price,price_usd,transfer_from,transfer_to,currency_id,bundle_sale,block_number,trade_time,tx_hash,marketplace,n.token_id"
query := fmt.Sprintf(
`SELECT %s FROM %s nt
INNER JOIN %s nc
ON nt.nftclass_id=nc.nftclass_id
INNER JOIN %s n
ON nt.nft_id=n.nft_id
WHERE nc.blockchain=$1 AND nc.address=$2
AND trade_time>to_timestamp($3) AND trade_time<to_timestamp($4)
ORDER BY trade_time DESC`,
tradeVars,
NfttradeCurrTable,
nftclassTable,
nftTable,
)
rows, err = rdb.postgresClient.Query(context.Background(), query, blockchain, address, starttime.Unix(), endtime.Unix())
if err != nil {
return
}
defer rows.Close()
for rows.Next() {
var (
trade dia.NFTTrade
price string
currencyID sql.NullString
tokenID sql.NullString
)
err := rows.Scan(
&price,
&trade.PriceUSD,
&trade.FromAddress,
&trade.ToAddress,
¤cyID,
&trade.BundleSale,
&trade.BlockNumber,
&trade.Timestamp,
&trade.TxHash,
&trade.Exchange,
&tokenID,
)
if err != nil {
return []dia.NFTTrade{}, err
}
n := new(big.Int)
n, ok := n.SetString(price, 10)
if !ok {
return []dia.NFTTrade{}, err
}
trade.Price = n
if currencyID.Valid {
if asset, ok := currencyCache[currencyID.String]; ok {
trade.Currency = asset
} else {
asset, err := rdb.GetAssetByID(currencyID.String)
if err != nil {
log.Errorf("cannot fetch asset with postgres id %s", currencyID.String)
}
trade.Currency = asset
currencyCache[currencyID.String] = asset
}
}
if tokenID.Valid {
trade.NFT.TokenID = tokenID.String
}
trades = append(trades, trade)
}
return
}
// GetNFTTrades returns all trades done on the nft given by @address, @blockchain and @tokenID.
func (rdb *RelDB) GetNFTTrades(address string, blockchain string, tokenID string, starttime time.Time, endtime time.Time) (trades []dia.NFTTrade, err error) {
var rows pgx.Rows
nftID, err := rdb.GetNFTID(address, blockchain, tokenID)
if err != nil {
return
}
tradeVars := "price,price_usd,transfer_from,transfer_to,currency_id,bundle_sale,block_number,trade_time,tx_hash,marketplace"
query := fmt.Sprintf(
"SELECT %s FROM %s WHERE nft_id='%s' AND trade_time>to_timestamp($1) AND trade_time<to_timestamp($2) ORDER BY trade_time DESC",
tradeVars,
NfttradeCurrTable,
nftID,
)
rows, err = rdb.postgresClient.Query(context.Background(), query, starttime.Unix(), endtime.Unix())
if err != nil {
return
}
defer rows.Close()
log.Info("query: ", query)
for rows.Next() {
var trade dia.NFTTrade
var price string
var currencyID sql.NullString
err := rows.Scan(
&price,
&trade.PriceUSD,
&trade.FromAddress,
&trade.ToAddress,
¤cyID,
&trade.BundleSale,
&trade.BlockNumber,
&trade.Timestamp,
&trade.TxHash,
&trade.Exchange,
)
if err != nil {
return []dia.NFTTrade{}, err
}
n := new(big.Int)
n, ok := n.SetString(price, 10)
if !ok {
return []dia.NFTTrade{}, err
}
trade.Price = n
if currencyID.Valid {
if asset, ok := currencyCache[currencyID.String]; ok {
trade.Currency = asset
} else {
asset, err := rdb.GetAssetByID(currencyID.String)
if err != nil {
log.Errorf("cannot fetch asset with postgres id %s", currencyID.String)
}
trade.Currency = asset
currencyCache[currencyID.String] = asset
}
}
trades = append(trades, trade)
}
return
}
// GetAllLastTrades returns the last recorded trade for each NFT from the collection given by @nftclass.
// Caution: Currently, not all dia.NFTTrade variables are returned.
func (rdb *RelDB) GetAllLastTrades(nftclass dia.NFTClass) (trades []dia.NFTTrade, err error) {
query := fmt.Sprintf(
`SELECT s.price,s.token_id,s.trade_time,s.address,s.blockchain,s.decimals FROM (
SELECT DISTINCT ON (col.nft_id) ntc.price,col.token_id,ntc.trade_time,a.address,a.blockchain,a.decimals
FROM %s ntc
INNER JOIN
(
SELECT nft_id, token_id
FROM %s n
INNER JOIN %s nc
ON n.nftclass_id=nc.nftclass_id
WHERE nc.address=$1 AND nc.blockchain=$2
) AS col
ON ntc.nft_id=col.nft_id
INNER JOIN %s a
ON ntc.currency_id=a.asset_id
ORDER BY col.nft_id,ntc.trade_time ASC
) s ORDER BY s.trade_time ASC`,
NfttradeCurrTable,
nftTable,
nftclassTable,
assetTable,
)
var rows pgx.Rows
rows, err = rdb.postgresClient.Query(context.Background(), query, nftclass.Address, nftclass.Blockchain)
if err != nil {
return
}
defer rows.Close()
for rows.Next() {
var (
trade dia.NFTTrade
price string
tokenID sql.NullString
tradeTime sql.NullTime
currencyAddress sql.NullString
currencyBlockchain sql.NullString
currencyDecimals sql.NullInt64
)
err = rows.Scan(
&price,
&tokenID,
&tradeTime,
¤cyAddress,
¤cyBlockchain,
¤cyDecimals,
)
if err != nil {
return
}
n := new(big.Int)
n, ok := n.SetString(price, 10)
if !ok {
err = errors.New("Cannot parse trade price.")
return
}
trade.Price = n
if tokenID.Valid {
trade.NFT.TokenID = tokenID.String
}
if tradeTime.Valid {
if tradeTime.Time == (time.Time{}) {
log.Warn("zero timestamp, continue.")
continue
}
trade.Timestamp = tradeTime.Time
}
if currencyAddress.Valid {
trade.Currency.Address = currencyAddress.String
}
if currencyBlockchain.Valid {
trade.Currency.Blockchain = currencyBlockchain.String
}
if currencyDecimals.Valid {
trade.Currency.Decimals = uint8(currencyDecimals.Int64)
}
trades = append(trades, trade)
}
return
}
// GetNFTFloorLevel returns the floor price of @nftclass w.r.t. the last 24h.
// Here, floor is w.r.t the lower bound @level.
// For Ethereum, only trades with @currencies are taken into account.
func (rdb *RelDB) GetNFTFloorLevel(
nftclass dia.NFTClass,
timestamp time.Time,
floorWindowSeconds time.Duration,
currencies []dia.Asset,
level float64,
noBundles bool,
exchange string,
) (floor float64, err error) {
query := fmt.Sprintf(`
SELECT min(tr.price::numeric)
FROM %s tr
INNER JOIN %s n
ON tr.nftclass_id=n.nftclass_id
WHERE tr.trade_time<=to_timestamp($1) AND tr.trade_time>to_timestamp($2)
AND tr.price::numeric>$3
AND n.address=$4 AND n.blockchain=$5`,
NfttradeCurrTable,
nftclassTable,
)
interNumArgs := 5
if exchange != "" {
query += " AND tr.marketplace=$6"
interNumArgs = 6
}
// Only take into account selected currencies for payment.
if nftclass.Blockchain == dia.ETHEREUM || nftclass.Blockchain == dia.ASTAR {
for i := range currencies {
if i == 0 {
query += " AND ("
}
query += fmt.Sprintf(" currency_id=(SELECT asset_id FROM %s WHERE blockchain=$%v AND address=$%v) ",
assetTable,
2*i+1+interNumArgs,
2*(i+1)+interNumArgs,
)
if i < len(currencies)-1 {
query += " OR "
} else {
query += " ) "
}
}
}
if noBundles {
query += " AND tr.bundle_sale=false"
}
// Fill arguments slice for prepared statment.
arguments := make([]interface{}, 2*len(currencies)+interNumArgs)
arguments[0] = timestamp.Unix()
arguments[1] = timestamp.Add(-floorWindowSeconds).Unix()
arguments[2] = level
arguments[3] = nftclass.Address
arguments[4] = nftclass.Blockchain
if exchange != "" {
arguments[5] = exchange
}
for i, c := range currencies {
arguments[2*i+interNumArgs] = c.Blockchain
arguments[2*i+1+interNumArgs] = c.Address
}
log.Info("query: ", query)
log.Info("arguments: ", arguments)
var floorFloat sql.NullFloat64
err = rdb.postgresClient.QueryRow(context.Background(), query, arguments...).Scan(&floorFloat)
if err != nil {
return
}
if floorFloat.Valid {
floor, _ = new(big.Float).Quo(big.NewFloat(0).SetFloat64(floorFloat.Float64), new(big.Float).SetFloat64(math.Pow10(18))).Float64()
} else {
err = errors.New("no result in given time-range")
return
}
return
}
// GetNFTFloor returns the floor price of @nftclass w.r.t. the last 24h.
func (rdb *RelDB) GetNFTFloor(
nftclass dia.NFTClass,
timestamp time.Time,
floorWindowSeconds time.Duration,
noBundles bool,
exchange string,
) (floor float64, err error) {
var paymentCurrencies []dia.Asset
switch nftclass.Blockchain {
case dia.ETHEREUM:
paymentCurrencies = append(paymentCurrencies, dia.Asset{Blockchain: dia.ETHEREUM, Address: "0x0000000000000000000000000000000000000000"})
paymentCurrencies = append(paymentCurrencies, dia.Asset{Blockchain: dia.ETHEREUM, Address: "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2"})
case dia.ASTAR:
paymentCurrencies = append(paymentCurrencies, dia.Asset{Blockchain: dia.ASTAR, Address: "0x0000000000000000000000000000000000000000"})
paymentCurrencies = append(paymentCurrencies, dia.Asset{Blockchain: dia.ASTAR, Address: "0x9dA4A3a345bf6371f8e47c63Cad2293e532022dE"})
case dia.BINANCESMARTCHAIN:
paymentCurrencies = append(paymentCurrencies, dia.Asset{Blockchain: dia.BINANCESMARTCHAIN, Address: "0x0000000000000000000000000000000000000000"})
paymentCurrencies = append(paymentCurrencies, dia.Asset{Blockchain: dia.BINANCESMARTCHAIN, Address: "0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c"})
}
return rdb.GetNFTFloorLevel(nftclass, timestamp, floorWindowSeconds, paymentCurrencies, float64(0), noBundles, exchange)
}
// GetNFTFloorRecursive returns the floor price of @nftclass. If necessary, it iterates back in time until it finds a floor price.
func (rdb *RelDB) GetNFTFloorRecursive(
nftClass dia.NFTClass,
timestamp time.Time,
floorWindowSeconds time.Duration,
stepBackLimit int,
noBundles bool,
exchange string,
) (floor float64, err error) {
var (
count int
foundFloor bool
)
for !foundFloor && count < stepBackLimit {
floor, err = rdb.GetNFTFloor(nftClass, timestamp, floorWindowSeconds, noBundles, exchange)
if err != nil {
if strings.Contains(err.Error(), "no result") {
count++
timestamp = timestamp.Add(-floorWindowSeconds)
continue
} else {
return
}
} else {
foundFloor = true
}
}
return
}
// GetNFTFloorRange returns a slice of floor prices in the given time range @starttime -- @endtime.
func (rdb *RelDB) GetNFTFloorRange(
nftClass dia.NFTClass,
starttime time.Time,
endtime time.Time,
floorWindowSeconds time.Duration,
stepBackLimit int,
noBundles bool,
exchange string,
) (floorPrices []float64, err error) {
// Find initial floor price by going back in time if necessary.
floor, err := rdb.GetNFTFloorRecursive(nftClass, starttime, floorWindowSeconds, stepBackLimit, noBundles, exchange)
if err != nil {
if strings.Contains(err.Error(), "no result") {
log.Warn("could not find initial floor price.")
} else {
return
}
}
floorPrices = append(floorPrices, floor)
starttime = starttime.Add(floorWindowSeconds)
// Continue filling floor prices. If none is found add the last one.
for starttime.Before(endtime) {
floor, err := rdb.GetNFTFloor(nftClass, starttime, floorWindowSeconds, noBundles, exchange)
if err != nil {
if len(floorPrices) > 0 {
floorPrices = append(floorPrices, floorPrices[len(floorPrices)-1])
}
} else {
floorPrices = append(floorPrices, floor)
}
starttime = starttime.Add(floorWindowSeconds)
}
return
}
// GetTopNFTsEth returns a list of @numCollections NFT collections sorted by trading volume in [@starttime, @endtime]
// in descending order. Only takes into account trades done with ETH.
func (rdb *RelDB) GetTopNFTsEth(numCollections int, offset int64, exchanges []string, starttime time.Time, endtime time.Time) (nftVolumes []struct {
Name string
Address string
Blockchain string
Volume float64
}, err error) {
var (
rows pgx.Rows
exchangeQuery string
)
query := fmt.Sprintf(`
SELECT nc.name,nc.address,nc.blockchain,SUM(price::numeric)
FROM %s INNER JOIN %s nc
ON nfttradecurrent.nftclass_id=nc.nftclass_id
WHERE trade_time>to_timestamp($1)
AND trade_time<=to_timestamp($2)
AND (currency_id=(SELECT asset_id FROM %s WHERE blockchain='%s' AND address='%s')
OR currency_id=(SELECT asset_id FROM %s WHERE blockchain='%s' AND address='%s') ) `,
NfttradeCurrTable,
nftclassTable,
assetTable,
dia.ETHEREUM,
"0x0000000000000000000000000000000000000000",
assetTable,
dia.ETHEREUM,
"0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
)
for i := range exchanges {
if i == 0 {
exchangeQuery += fmt.Sprintf(" AND (marketplace=$%v ", i+3)
continue
}
exchangeQuery += fmt.Sprintf(" OR marketplace=$%v ", i+3)
}
if len(exchanges) > 0 {
exchangeQuery += ") "
query += exchangeQuery
}
query += fmt.Sprintf(`
GROUP BY nc.name,nc.address,nc.blockchain
ORDER BY sum(price::numeric) DESC LIMIT $%v
OFFSET $%v`,
len(exchanges)+3,
len(exchanges)+4,
)
// Fill arguments slice for prepared statment.
arguments := make([]interface{}, len(exchanges)+4)
arguments[0] = starttime.Unix()
arguments[1] = endtime.Unix()
for i, e := range exchanges {
arguments[i+2] = e
}
arguments[len(exchanges)+2] = numCollections
arguments[len(exchanges)+3] = offset
rows, err = rdb.postgresClient.Query(context.Background(), query, arguments...)
if err != nil {
return
}
defer rows.Close()
for rows.Next() {
var (
name string
address string
blockchain string
volume float64
)
err = rows.Scan(
&name,
&address,
&blockchain,
&volume,
)
if err != nil {
return
}
nftVolumes = append(nftVolumes, struct {
Name string
Address string
Blockchain string
Volume float64
}{Name: name, Address: address, Blockchain: blockchain, Volume: volume * 1e-18})
}
return
}
// GetNFTVolume returns the trade volume of a collection in the time-range (@starttime, @endtime].
func (rdb *RelDB) GetNFTVolume(address, blockchain, exchange string, starttime time.Time, endtime time.Time) (float64, error) {
var (
query string
volume sql.NullFloat64
err error
)
if exchange == "" {
query = fmt.Sprintf(`
SELECT SUM(price::numeric)
FROM %s INNER JOIN %s nc
ON nfttradecurrent.nftclass_id=nc.nftclass_id
WHERE trade_time>to_timestamp($1)
AND trade_time<=to_timestamp($2)
AND nc.address=$3 AND nc.blockchain=$4`,
NfttradeCurrTable,
nftclassTable,
)
err = rdb.postgresClient.QueryRow(context.Background(), query, starttime.Unix(), endtime.Unix(), address, blockchain).Scan(&volume)
} else {
query = fmt.Sprintf(`
SELECT SUM(price::numeric)
FROM %s INNER JOIN %s nc
ON nfttradecurrent.nftclass_id=nc.nftclass_id
WHERE trade_time>to_timestamp($1)
AND trade_time<=to_timestamp($2)
AND nc.address=$3 AND nc.blockchain=$4 AND marketplace=$5 `,
NfttradeCurrTable,
nftclassTable,
)
err = rdb.postgresClient.QueryRow(context.Background(), query, starttime.Unix(), endtime.Unix(), address, blockchain, exchange).Scan(&volume)
}
// TO DO: address currency issue.
if volume.Valid {
return volume.Float64 / 1e18, nil
}
return 0, err
}
// GetNFTExchanges returns the exchanges in which nft is traded
func (rdb *RelDB) GetNFTExchanges(address string, blockchain string) (exchanges []string, err error) {
query := fmt.Sprintf(`
SELECT DISTINCT marketplace
FROM %s INNER JOIN %s nc
ON nfttradecurrent.nftclass_id=nc.nftclass_id
WHERE nc.address=$1 AND nc.blockchain=$2`,
NfttradeCurrTable,
nftclassTable,
)
rows, err := rdb.postgresClient.Query(context.Background(), query, address, blockchain)
if err != nil {
return
}
defer rows.Close()
for rows.Next() {
var (
exchange sql.NullString
)
errScan := rows.Scan(&exchange)
if errScan != nil {
log.Error("Error getting results from db ", errScan)
}
if exchange.Valid {
exchanges = append(exchanges, exchange.String)
}
}
return exchanges, err
}
// GetNumNFTTrades returns the number of trades recorded in [@starttime,@endtime] on the collection on @blockchain with @address.
func (rdb *RelDB) GetNumNFTTrades(address, blockchain, exchange string, starttime time.Time, endtime time.Time) (int, error) {
var (
query string
numTrades sql.NullInt64
err error
)
if exchange == "" {
query = fmt.Sprintf(`
SELECT count(*)
FROM %s INNER JOIN %s nc
ON nfttradecurrent.nftclass_id=nc.nftclass_id
WHERE trade_time>to_timestamp($1) AND trade_time<to_timestamp($2)
AND nc.address=$3 AND nc.blockchain=$4`,
NfttradeCurrTable,
nftclassTable,
)
err = rdb.postgresClient.QueryRow(context.Background(), query, starttime.Unix(), endtime.Unix(), address, blockchain).Scan(&numTrades)
} else {
query = fmt.Sprintf(`
SELECT count(*)
FROM %s INNER JOIN %s nc
ON nfttradecurrent.nftclass_id=nc.nftclass_id
WHERE trade_time>to_timestamp($1) AND trade_time<to_timestamp($2)
AND nc.address=$3 AND nc.blockchain=$4 and marketplace=$5`,
NfttradeCurrTable,
nftclassTable,
)
err = rdb.postgresClient.QueryRow(context.Background(), query, starttime.Unix(), endtime.Unix(), address, blockchain, exchange).Scan(&numTrades)
}
if numTrades.Valid {
return int(numTrades.Int64), nil
}
return 0, err
}
// GetNFTOffers returns all offers done on the nft given by @address, @blockchain and @tokenID.
func (rdb *RelDB) GetNFTOffers(address string, blockchain string, tokenID string) (offers []dia.NFTOffer, err error) {
var rows pgx.Rows
nftID, err := rdb.GetNFTID(address, blockchain, tokenID)
tradeVars := "start_value,end_value,duration,from_address,auction_type,currency_symbol,currency_address,currency_decimals,blocknumber,offer_time,tx_hash,marketplace"
query := fmt.Sprintf("SELECT %s FROM %s WHERE nft_id='%s' ORDER BY offer_time DESC", tradeVars, nftofferTable, nftID)
rows, err = rdb.postgresClient.Query(context.Background(), query)
if err != nil {
return
}
defer rows.Close()
for rows.Next() {
var (
offer dia.NFTOffer
startvalue string
endvalue string
duration int
)
err := rows.Scan(
&startvalue,
&endvalue,
&duration,
&offer.FromAddress,
&offer.AuctionType,
&offer.CurrencySymbol,
&offer.CurrencyAddress,
&offer.CurrencyDecimals,
&offer.BlockNumber,
&offer.Timestamp,
&offer.TxHash,
&offer.Exchange,
)
if err != nil {
return []dia.NFTOffer{}, err
}
if startvalue != "<nil>" {
s := new(big.Int)
s, ok := s.SetString(startvalue, 10)
if !ok {
log.Error("err parse startvalue.")
return []dia.NFTOffer{}, err
}
offer.StartValue = s
}
if endvalue != "<nil>" {
e := new(big.Int)
e, ok := e.SetString(endvalue, 10)
if !ok {
log.Error("err parse endvalue.")
return []dia.NFTOffer{}, err
}
offer.EndValue = e
}
offer.Duration = time.Duration(duration) * time.Second
offers = append(offers, offer)
}
return
}
// GetNFTBids returns all bids done on the nft given by @address, @blockchain and @tokenID.
func (rdb *RelDB) GetNFTBids(address string, blockchain string, tokenID string) (bids []dia.NFTBid, err error) {
var rows pgx.Rows
nftID, err := rdb.GetNFTID(address, blockchain, tokenID)
tradeVars := "bid_value,from_address,currency_symbol,currency_address,currency_decimals,blocknumber,bid_time,tx_hash,marketplace"
query := fmt.Sprintf("SELECT %s FROM %s WHERE nft_id='%s' ORDER BY bid_time DESC", tradeVars, nftbidTable, nftID)
rows, err = rdb.postgresClient.Query(context.Background(), query)